Deck 6: Physical and Chemical Changes

Question 1

Moving from one location to another requires rotational energy.

Answer 1

False

Question 2

Rotating is a type of kinetic energy.

Answer 2

True

Question 3

Vibrating is a type of kinetic energy.

Answer 3

True

Question 4

Moving from one location to another requires translational energy.

Question 5

Hydrogen bonds are an attractive force between a phosphorus atom and a nearby hydrogen atom bonded to a phosphorus atom.

Question 6

A particular compound lacks an overall separation of charge within itself. Therefore, the compound is nonpolar.

Question 7

A particular compound has an overall separation of charge within itself. Therefore, the compound is nonpolar.

Question 8

A particular compound has an overall separation of charge within itself. Therefore, the compound is polar.

Question 9

Condensation is the reverse of freezing.

Question 10

The density of a gas is greater than that of a liquid.

Question 11

The density of a solid is greater than that of a liquid.

Question 12

H₂O has the ability to have hydrogen bonds.

Question 13

A solid block of aluminum has a volume of 10 cm³ and a density of 2.7 g/cm³. Its mass is ____

A) 27
B) 90
C) 20
D) 35
E) None of the above.

Question 14

A solid block of ice has a volume of 100 cm³ and a density of 0.9 g/cm³. Its mass is ____

A) 27
B) 90
C) 20
D) 35
E) None of the above.

Question 15

A solid block of cork has a volume of 100 cm³ and a density of 0.2 g/cm³. Its mass is ____

A) 27
B) 90
C) 20
D) 35
E) None of the above.

Question 16

The mass of a piece of oak wood is 45.0 g and has a density of 0.800 g/cm³. The volume this mass occupies is ______ cm³.

A) 56.3
B) 113
C) 169
D) 225
E) None of the above.

Question 17

The mass of a piece of oak wood is 90.0 g and has a density of 0.800 g/cm³. The volume this mass occupies is ______ cm³.

A) 56.3
B) 113
C) 169
D) 225
E) None of the above.

Question 18

The mass of a piece of oak wood is 135.0 g and has a density of 0.800 g/cm³. The volume this mass occupies is ______ cm³.

A) 56.3
B) 113
C) 169
D) 225
E) None of the above.

Question 19

The density of water decreases with increasing temperature. This is known as __.

A) dispersion forces
B) intermolecular forces
C) evaporation
D) thermal expansion
E) None of the above.

Question 20

The weak attractive force between nonpolar molecules in close proximity is known as _____.

A) dispersion forces
B) intermolecular forces
C) evaporation
D) thermal expansion
E) None of the above.

Question 21

The process of a liquid turning into a gas at its surface is called ____.

A) dispersion forces
B) intermolecular forces
C) evaporation
D) thermal expansion
E) None of the above.

Question 22

Evaporation is an _____ process.

A) exothermic
B) endothermic
C) intermolecular
D) Both B and C
E) None of the above.

Question 23

Condensation is an _____ process.

A) exothermic
B) endothermic
C) intermolecular
D) Both B and C
E) None of the above.

Question 24

Sublimation is an _____ process.

A) exothermic
B) endothermic
C) intermolecular
D) Both B and C
E) None of the above.

Question 25

During the process of sublimation a ____ changes directly to a ____.

A) solid, liquid
B) liquid, gas
C) liquid, solid
D) solid, gas
E) None of the above.

Question 26

The most abundant gas in the Earth's lower atmosphere is _____.

A) nitrogen (N₂)
B) oxygen (O₂)
C) argon (Ar)
D) carbon dioxide (CO₂)
E) None of the above.

Question 27

The 2^nd most abundant gas in the Earth's lower atmosphere is _____.

A) nitrogen (N₂)
B) oxygen (O₂)
C) argon (Ar)
D) carbon dioxide (CO₂)
E) None of the above.

Question 28

Approximately 0.9% of the Earth's lower atmosphere is composed of ___ and other trace gases.

A) nitrogen (N₂)
B) oxygen (O₂)
C) argon (Ar)
D) carbon dioxide (CO₂)
E) None of the above.

Question 29

At a constant pressure, as the temperature of a gas increases its volume will ____.

A) decrease
B) increase
C) remain the same
D) become zero
E) None of the above.

Question 30

At a constant pressure, as the temperature of a gas decreases its volume will ____.

A) decrease
B) increase
C) remain the same
D) become zero
E) None of the above.

Question 31

At a constant temperature, as the volume of a gas decreases its pressure will ____.

A) decrease
B) increase
C) remain the same
D) become zero
E) None of the above.

Question 32

At a constant temperature, as the volume of a gas increases its pressure will ____.

A) decrease
B) increase
C) remain the same
D) become zero
E) None of the above.

Question 33

Suppose a balloon was inflated with nitrogen gas to a volume of 1.0 L at 27^oC, then placed into a freezer kept at -23 ^oC. Once it cooled to -23^oC, the new volume of the balloon was ____ L.

A) 0.55
B) 0.61
C) 0.66
D) 0.83
E) None of the above.

Question 34

Suppose a balloon was inflated with nitrogen gas to a volume of 1.0 L at 20^oC, then placed into a freezer kept at -80^oC. Once it cooled to -80^oC, the new volume of the balloon was ____ L.

A) 0.55
B) 0.61
C) 0.66
D) 0.83
E) None of the above.

Question 35

Suppose a balloon was inflated with nitrogen gas to a volume of 1.0 L at 45^oC, then placed into a freezer kept at -80^oC. Once it cooled to -80^oC, the new volume of the balloon was ____ L.

A) 0.55
B) 0.61
C) 0.66
D) 0.83
E) None of the above.

Question 36

Suppose a balloon was inflated with nitrogen gas to a volume of 1.0 L at 80^oC, then placed into a freezer kept at -80^oC. Once it cooled to -80^oC, the new volume of the balloon was ____ L.

A) 0.55
B) 0.61
C) 0.66
D) 0.83
E) None of the above.

Question 37

The coldest possible temperature known is -200^oC.

Question 38

A helium-filled balloon has a volume of 1.0 L at sea level and a pressure of 760 mm-Hg, and a temperature of 30 ^oC. What is the volume of this balloon if it experienced a pressure of 600 mm-Hg at a temperature of 27 ^oC?

A) 1.1 L
B) 1.3 L
C) 1.0 L
D) 1.2 L
E) None of the above.

Question 39

A helium-filled balloon has a volume of 1.0 L at sea level and a pressure of 760 mm-Hg, and a temperature of 30 ^oC. What is the volume of this balloon if it experienced a pressure of 850 mm-Hg at a temperature of 80 ^oC?

A) 1.1 L
B) 1.3 L
C) 1.0 L
D) 1.2 L
E) None of the above.

Question 40

A helium-filled balloon has a volume of 1.0 L at sea level and a pressure of 760 mm-Hg, and a temperature of 30 ^oC. What is the volume of this balloon if it experienced a pressure of 850 mm-Hg at a temperature of 140 ^oC?

A) 1.1 L
B) 1.3 L
C) 1.0 L
D) 1.2 L
E) None of the above.

Question 41

-115 ^oC is warmer than 115 K.

Question 42

Diamond is an allotrope of carbon.

Question 43

Select the correct choice for the coefficients needed to balance the following equation.
___CH₄ + ___O₂ $\rightarrow$ ___CO₂ + ___H₂O

A) 1,2,1,2
B) 1,2,2,1
C) 1,1,1,1
D) 2,2,1
E) 1,1,1

Question 44

Select the correct choice for the coefficients needed to balance the following equation.
___C₂H₄ + ___O₂ $\rightarrow$ ___CO₂ + ___H₂O

A) 1,2,1,2
B) 1,2,2,1
C) 1,1,1,1
D) 2,2,1
E) 1,3,2,2

Question 45

Select the correct choice for the coefficients needed to balance the following equation.
___H₂O $\rightarrow$ ___O₂ + ___H₂

A) 1,2,1
B) 1,2,2
C) 1,1,0
D) 2,1,2
E) 1,1,1

Question 46

Select the correct choice for the coefficients needed to balance the following equation.
___COCl₂ $\rightarrow$ ___CO + ___Cl₂

A) 1,2,1
B) 1,2,2,1
C) 1,1,0
D) 2,2,1
E) 1,1,1

Question 47

Select the correct choice for the coefficients needed to balance the following equation.
___NaCl + ___KNO₃ $\rightarrow$ ___NaNO₃ + ___KCl

A) 1,2,1,2
B) 1,2,2,1
C) 1,1,1,1
D) 1,1,1,2
E) 1,1,2,1

Question 48

Select the correct choice for the coefficients needed to balance the following equation.
___H₂SO₄ + ___NaOH $\rightarrow$ ___H₂O + ___Na₂SO₄

A) 1,2,1,2
B) 1,2,2,1
C) 1,1,1,1
D) 1,1,1,2
E) 1,1,2,1

Question 49

Select the correct choice for the coefficients needed to balance the following equation.
___H₂SO₄ + ___Ca(OH)₂ $\rightarrow$ ___H₂O + ___CaSO₄

A) 1,2,1,2
B) 1,2,2,1
C) 1,1,1,1
D) 1,1,1,2
E) 1,1,2,1

Question 50

Select the correct choice for the coefficients needed to balance the following equation.
___H₂SO₄ + ___Al(OH)₃ $\rightarrow$ ___H₂O + ___Al₂(SO₄)₃

A) 2,3,6,1
B) 3,2,1,6
C) 3,2,6,1
D) 3,2,2,2
E) 2,1,3,6

Question 51

Select the correct choice for the coefficients needed to balance the following equation.
___H₃PO₄ + ___Al(OH)₃ $\rightarrow$ ___H₂O + ___AlPO₄

A) 1,2,1,2
B) 1,2,2,1
C) 1,1,3,1
D) 1,1,1,2
E) 1,1,2,1

Question 52

Select the correct choice for the coefficients needed to balance the following equation.
___MgCl₂ + ___NaNO₃ $\rightarrow$ ___Mg(NO₃)₂ + ___NaCl

A) 1,2,1,2
B) 1,2,2,1
C) 1,1,1,1
D) 1,1,1,2
E) 1,1,2,1

Question 53

Select the correct choice for the coefficients needed to balance the following equation.
___NaN₃ $\rightarrow$ ___N₂ + ___Na

A) 1,2,1
B) 2,3,2
C) 3,2,2
D) 2,2,3
E) 1,1,3

Question 54

Select the correct choice for the coefficients needed to balance the following equation.
___H₂O₂ $\rightarrow$ ___H₂O + ___O₂

A) 4,4,2
B) 4,2,4
C) 2,4,4
D) 4,4,1
E) 1,4,4

Question 55

A balanced chemical equation will show conservation of mass.

Question 56

A balanced chemical equation will show conservation of coefficients.

Question 57

A chemical change is a process that produces substances with a new physical composition.

Question 58

A chemical change is a process that produces substances with a new chemical composition.

Question 59

Metabolism is not an example of chemical change.

Question 60

Metabolism is an example of chemical change.

Question 61

In the balanced equation, Zn + 2HCl $\rightarrow$ Cl₂ + H₂, the number two shown before HCl is a subscript.

Question 62

In the balanced equation, Zn + 2HCl $\rightarrow$ Cl₂ + H₂, the number two shown before HCl is a coefficient.

Question 63

For all combustion reactions having the general formula,
C_nH_2n+2 + O₂ $\rightarrow$ CO₂ + H₂O, the coefficient for carbon dioxide will always be an odd number.

Question 64

For all combustion reactions having the general formula,
C_nH_2n+2 + O₂ $\rightarrow$ CO₂ + H₂O, the coefficient for water will always be an odd number.

Question 65

For all combustion reactions having the general formula,
C_nH_2n+2 + O₂ $\rightarrow$ CO₂ + H₂O, the coefficient for CO₂ will always be an even number.

Question 66

For all acid-base reactions having a formula, HX + MOH $\rightarrow$ H₂O +MX, the coefficients for HX and MOH will always be the same number. Hint: HX is an acid (i.e., HCl) and MOH is an ionic compound such as NaOH.

Question 67

The number and types of atoms found on the reactant side of a chemical equation must always be in the same chemical composition as on the product side.

Question 68

If you have 250 g of gold then you have _____ moles of Au.

A) 1.27
B) 1.02
C) 0.761
D) 0.508
E) None of the above.

Question 69

If you have 200 g of gold then you have _____ moles of Au.

A) 1.27
B) 1.02
C) 0.761
D) 0.508
E) None of the above.

Question 70

If you have 100 g of gold then you have _____ moles of Au.

A) 1.27
B) 1.02
C) 0.761
D) 0.508
E) None of the above.

Question 71

If you have 250 g of gold then you have _____ x 10²³ gold atoms.

A) 6.14
B) 7.64
C) 3.06
D) 1.11
E) None of the above.

Question 72

If you have 200 g of gold then you have _____ x 10²³ gold atoms.

A) 6.14
B) 7.64
C) 3.06
D) 1.11
E) None of the above.

Question 73

If you have 100 g of gold then you have _____ x 10²³ gold atoms.

A) 6.14
B) 7.64
C) 3.06
D) 1.11
E) None of the above.

Question 74

Consider the following reaction. C₆H₁₂O₆ + 6O₂ $\rightarrow$ 6CO₂ + 6H₂O
How many moles of water are released when 3.00 moles of C₆H₁₂O₆ are burned?

A) 18
B) 9
C) 1
D) 3
E) None of the above.

Question 75

Consider the following reaction. C₆H₁₂O₆ + 6O₂ $\rightarrow$ 6CO₂ + 6H₂O
In order to produce 24 moles of CO₂, ____ moles of C₆H₁₂O₆ must be burned?

A) 2
B) 3
C) 4
D) 8
E) None of the above.

Question 76

Consider the following reaction. C₆H₁₂O₆ + 6O₂ $\rightarrow$ 6CO₂ + 6H₂O
If 20 moles of oxygen gas are used up in this reaction then ___moles of CO₂ are released.

A) 16
B) 18
C) 20
D) 24
E) None of the above.

Question 77

Consider the following reaction. C₆H₁₂O₆ + 6O₂ $\rightarrow$ 6CO₂ + 6H₂O
If 2.0 moles of oxygen gas are used up in this reaction then ___x 10²⁴ molecules of CO₂ are released.

A) 1.2
B) 1.9
C) 3.3
D) 6.8
E) None of the above.

Question 78

Consider the following reaction. C₆H₁₂O₆ + 6O₂ $\rightarrow$ 6CO₂ + 6H₂O
If 3.1 moles of oxygen gas are used up in this reaction then ___x 10²⁴ molecules of CO₂ are released.

A) 1.2
B) 1.9
C) 3.3
D) 6.8
E) None of the above.

Question 79

Consider the following reaction. C₆H₁₂O₆ + 6O₂ $\rightarrow$ 6CO₂ + 6H₂O
If 5.4 moles of oxygen gas are used up in this reaction then ___x 10²⁴ molecules of CO₂ are released.

A) 1.2
B) 1.9
C) 3.3
D) 6.8
E) None of the above.

Question 80

Avogadro's number defined as the number of atoms in exactly 12 g of C-13.